Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.5 091/367] PCI: keystone: Fix outbound region mapping | Date | Mon, 10 Feb 2020 04:30:04 -0800 |
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From: Yurii Monakov <monakov.y@gmail.com>
commit 2d0c3fbe43fa0e6fcb7a6c755c5f4cd702c0d2f4 upstream.
The Keystone outbound Address Translation Unit (ATU) maps PCI MMIO space in 8 MB windows. When programming the ATU windows, we previously incremented the starting address by 8, not 8 MB, so all the windows were mapped to the first 8 MB. Therefore, only 8 MB of MMIO space was accessible.
Update the loop so it increments the starting address by 8 MB, not 8, so more MMIO space is accessible.
Fixes: e75043ad9792 ("PCI: keystone: Cleanup outbound window configuration") Link: https://lore.kernel.org/r/20191004154811.GA31397@monakov-y.office.kontur-niirs.ru Signed-off-by: Yurii Monakov <monakov.y@gmail.com> [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Andrew Murray <andrew.murray@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/pci/controller/dwc/pci-keystone.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -422,7 +422,7 @@ static void ks_pcie_setup_rc_app_regs(st lower_32_bits(start) | OB_ENABLEN); ks_pcie_app_writel(ks_pcie, OB_OFFSET_HI(i), upper_32_bits(start)); - start += OB_WIN_SIZE; + start += OB_WIN_SIZE * SZ_1M; } val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
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